<template>
  <div class="page">
    <div class="login-box">
      <el-form :model='ruleForm' :rules="rules" ref="ruleForm" label-position="left" status-icon>
        <h3 class="title">系统登陆</h3>
        <el-form-item prop="account">
          <el-input type="text" v-model="ruleForm.account" auto-complete="off" placeholder="账号" id="loginEmail"/>
        </el-form-item>
        <el-form-item prop="checkPass">
          <el-input type="password" v-model="ruleForm.checkPass" auto-complete="off" placeholder="密码" id="loginPassword"/>
          <label id="showPasswordToggle">
            <el-checkbox v-model="checked" id="showPasswordCheck">显示密码</el-checkbox>
          </label>
          <router-link to="/" class="forget">忘记密码？</router-link>
        </el-form-item>
        <el-form-item style="width:100%;">
          <el-button type="primary" style="width:100%;" @click.native.prevent="handleSubmit" :loading="logining">
            登录
          </el-button>
        </el-form-item>
        <el-form-item style="width:100%;">
          <router-link to="/register">
            <el-button style="width:100%;">
              注册
            </el-button>
          </router-link>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
import { requestLogin } from '../../api/user'
export default {
  name: 'app-login',
  data: () => {
    return {
      logining: false,
      formUrl: '/',
      ruleForm: {
        account: 'admin',
        checkPass: '123456'
      },
      rules: {
        account: [
          {
            required: true,
            message: '请输入账号',
            trigger: 'blur'
          }
        ],
        checkPass: [
          {
            required: true,
            message: '请输入密码',
            trigger: 'blur'
          }
        ]
      },
      checked: false
    }
  },
  methods: {
    // 登陆
    handleSubmit () {
      this.$refs.ruleForm.validate(valid => {
        if (valid) {
          this.logining = true
          const params = { username: this.ruleForm.username, password: this.ruleForm.password }
          requestLogin(params).then(data => {
            this.logining = false
            this.$message({
              message: '登陆成功',
              type: 'success'
            })
            this.$router.push('/index')
          }).catch(err => {
            this.logining = false
            console.log(err)
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  },
  // 拦截router，获取上个页面，在登陆成功后返回到原来的页面
  beforeRouteEnter (to, from, next) {
    next(vm => {
      if (from.fullPath !== '/register' && !from.meta.errorPage) {
        vm.fromUrl = from.fullPath
      }
    })
  }
}
</script>

<style scoped>

  .title{
    text-align: center;
    margin-bottom: 15px;
  }

  .forget{
    float: right;
    color: #bbbbbb;
  }

  /* 背景页面 */
  .page{
    background-color: #eff3f4;
    position: absolute;
    width: 100%;
    height: 100%;
    font-size: 16px;
    font-family: 'Source Sans Pro', sans-serif;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
  }

  /* 登陆框 */
  .login-box{
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: block;
    width: 100%;
    max-width: 400px;
    background-color: #fff;
    margin: 0;
    padding: 2.25em;
    box-sizing: border-box;
    border: solid 1px #ddd;
    border-radius: .5em;
    font-family: 'Source Sans Pro', sans-serif;
  }

</style>
